I clicked on (enlarge page) Page stays large, coverin full page, no way to exit without holding off button on computer and restarting , restarting computer and restarting firefox, page still on large size render firefox unuseable , Please advise.

Question

How do I go From Enlarged page, back to standard size page?

Answer 1

BGreg, thank you for your quick response.
After having my iMac unplugged for a couple hours until the case was completely cold to the touch, it booted normally. I downloaded Smart Utility, and upon opening the application, it told me that my hard drive was failing. I did the long test to get a better idea of the situation, and it changed my status to "passed." My iMac then promptly froze up again, beachball and all. -.-
It seems that if my computer has been running for long enough to get warm, it stops wanting to function. I'm pretty sure when I restart it (most likely forcibly, as it's been frozen for over 10 minutes now) I will have all the boot issues once again.
I tried again with the hardware test when I started the iMac up in order to run Smart Utility, and holding down D still does nothing (install disc 1 is still in the drive).
Is there any way to know 100% that it's definitely the hard drive and *only* the hard drive? I would hate to buy a new one and go through the stress of taking my iMac apart for the first time only to find out after that there's another piece of hardware needing attention. I obviously can't use the built in hardware test anymore. With my budget the way it is, I'll probably have to repair it myself, so any pointers on diagnosing the issue before I start amateur surgery will be very appreciated. I was hoping to build a pc from the ground up before I ever needed to learn how to replace parts on my beloved iMac, but it looks like the iMac will be my first patient afterall.